Question

Jeff used an equal arm balance to weigh a 4.312 g sample of sodium chloride. Which of these measurements made by Jeff is the most accurate? (5 points) 4.5 g 4.1 g 4.2 g 4.3 g

Answer 1

Answer: The most accurate measurement made by Jeff is 4.3 g

Explanation:

Accuracy is defined as the closeness of a measured value to a standard or known value.

For Example: If the mass of a substance is 58 kg and one person weighed 57 kg and another person weighed 60 kg. Then, the weight measured by first person is more accurate.

We are given:

Mass of the sample = 4.312 g

So, the measurement close to 4.312 grams will be the accurate value.

Hence, the most accurate measurement made by Jeff is 4.3 g

Answer 2

Answer:

4.3.

Explanation:

• Measurements that are close to the known value are said to be accurate, whereas measurements that are close to each other are said to be precise.

• The most closest measurement to the known value is 4.3 g.
• So, the right choice is: 4.3 g.